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HT45F43 Datasheet(PDF) 102 Page - Holtek Semiconductor Inc

Part # HT45F43
Description  8-Bit Flash MCU with Op Amps & Comparators
PDF  152 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F43 Datasheet(HTML) 102 Page - Holtek Semiconductor Inc

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OPA2C2 Register
- HT45F23/HT45F43
Bit
76543210
Name
A1O2A2N
A1O2A2P
¾¾
PGAEN
PGA2
PGA1
PGA0
R/W
R/W
R/W
¾¾
R/W
R/W
R/W
R/W
POR
00
¾¾
0000
Bit 7
A1O2A2N: OPA1 output to OPA2 Inverting input control bit
0: disable
1: enable
Bit 6
A1O2A2P: OPA1 output to OPA2 Non-inverting input control bit
0: disable
1: enable
Bit 5~4
unimplemented, read as
²0²
Bit 3
PGAEN: OPA2 PGA gain enable control bits
0: disable
1: enable
Bit 2~0
PGA2,PGA1,PGA0: OPA2 Gain control bits
000: 1
001: 8
010: 16
011: 24
100: 32
101: 40
110: 48
111: 56
Operational Amplifier Operation
The advantages of multiple switches and input path options, various reference voltage selection, up to
8 kinds of internal software gain control, offset reference voltage calibration function and power down
control for low power consumption enhance the flexibility of these two OPAs to suit a wide range of
application possibilities.
The following block diagram illustrates the main functional blocks of the OPAs and Comparator in this
device.
Rev. 1.20
102
September 15, 2011
HT45F23/HT45F43
8-Bit Flash MCU with Op Amps & Comparators
A2
A2N
A2E
A1
A1N
A1P
0.9VLDO
VM
0.1VLDO
MUX
10K
560K
A1NS
A1O2N
A2O2N
R1
R2
A1PSEL[1:0]
A1OP
C1
C2
A1PS
A1OEN
A2OP
A2OEN
A1E
A1O2A2N
A1O2A2P
A2P
A2NS
PGAEN
PGAEN
A2PS
A1O2CIN
A2O2CIN
C2OUTEN
C1OUTEN
CINTO
C1INTEN
C2INTEN
C1NSEL
C2PSEL
C1OUT
C2OUT
C1N
C2P
CNP
CNPSEL
CMP1OP
CMP2OP
Edge
Select
CMPES[1:0]
CMPINT
CINTO
MUX
VH
MUX
VL
0.9VLDO
VM
0.1VLDO
MUX
A2PSEL[1:0]



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